Lot of two Mexico City, Mexico, cob 1/2R, Philip III, assayer F, both with partial dates that appear to be 1614/3/2 and 1610/09 (both rare). S-M17; KM-21. 3.26 grams total. F-VF with most of date visible on each (but last digit a guess), full monograms and crosses (crude on one), toned around details. (Estimate: $200 - 400)